Turbine.



0. BANNER. TURBINE. APPLICATION- FILED DEG. 2'1, 1911.

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Specification of Letters Patent;

, Application filed December 27, 1911.

Thecasing, as shown in Fig. 1, is divided transversely vertically into end members, cylinder members and an intermediate di- The casing is also dlvided in a horizontal plane co-incident 1 with the axis of the shaft 1 to form the upper and lower half sections 18, 19, and 20, 21, of the cylinder members of the casing, the upper and lower half members 22, 23, and 24, 25, of the end members of the casing and i the upper and lower divided half sect-ions 26, 27, and 28, 29, of the intermediate ring member. The lower half sections 19 and 21 of the cylinder members may be provided with brackets 30, 31, for use in supporting the engine.

Valves 32, 33, 34, serve to independently control the admission of the motive fluid to the low pressure chamberlO, high pressure chamber 12 and intermediate low pressure chamber 16.

The bearingsfor the shaft 1 at the opposite ends of the casing may be divided ina horizontal plane co-incident with the axis of the shaft 1 to form upper and lower half sections 35, 36, and 37, 38.

I have shown the two low pressure elements as each comprising four stages and have shown single rows of blades. It is to be understood, however, that the number of stages and the number'of rows of blades may be varied to suit different requirements.

In Fig. 1, I have shown the high pressure element as comprising two blade wheels and two partitions having single rows of blades and nozzles.

In Fig. 2,

Be it known that I, OTTO BANNER, asubject of the German Emperor, and resident of Easton, in the county of Northampton and State of Pennsylvania, have invented a new and useful Improvement in Turbine-Engines,

is a specification.

This invention 'CODSlSlZS of a double flow mixed pressure turbine engine of the so-. called action or velocity type, in which the shaftmay be driven by high pressure or low pressure motive fluid or by a combination of the two, the fluid passing through the two low pressure elements in opposite directions and the arrangement being such that one of the low pressure elements and the high pressure element may run idly if so desired.

Practical embodiments of my invention are represented in theaccompanying draw-. ings, in which- Figure 1 is a view of the turbine engine half in side elevation and half in longitudinal central vertical section showing one form of the invention, Fig. 2 is a detail section showing a modified form of the high pressure element, and Fig. 3 is a detail section showing a third form of the high pressure element.

The shaft is denoted byl, the low pres sure blade wheels by 2 and the high pressure blade wheels by 3. Each low pressure wheel 2 is shown as provided with a single row of blades 4 and each high pressure wheel 3 is shown as provided with a single row of blades5. 1

The partitions in the low pressure elements are denoted by 6 and their nozzles by 7. The partitions in the high pressure element are denoted by 8 and their nozzles by 9.-

At one end of the casing I provide an inlet I have shown a single blade wheel having two rows of blades 39, 40, with an interposed row of fixed blades 41.

In Fig. 3 Ihave shown a single high pressure wheel with a single row of blades of greater blading diameter than the rows of blades in the low pressure elements and have shown the portion of the casing which includes the high pressureelement as detachable from the portion of the casing which includes the low pressure elements.

These modifications are simply shown as examples of many difl'erent ways in which the elements may be arranged withoutdeparting fromthe spirit and scope of my invention.

The parts are so arranged that the shaft may be turned by the use of the high pressure element alone, by the use of'either one pressure inlet 11 and atthe other end of the casing I provide an inlet chamber 12 communicating with the high pressure inlet 13.

A common intermediate chamber 14 is provided, which chamber communicates with casing intermediate the high pressure chamber 12 and the common outlet chamber 14, which chamber 16 communicates with the low pressure inlet 17 and is also arranged to receive the streaming fluid which passes from the high pressure chamber 12 through the nozzles and blades of the high pressure element.

- ber containing the outlet chamber, and one of the cylinder members containing a low of'the low pressure elements alone or by the use of any combination of the three elements as may be required.

. What I claim is 1. A mixed pressure turbine engine including a casing divided transversely vertically into a low pressure element member, a combined high and low pressure element member and an intermediate outlet member.

'2. A mixed pressure turbine engine including a casing having hi h and low pressure element members and divided transversely vertically into end inlet members and an intermediate outlet member.

3. A mixed "pressure turbine engine including a casing divided transversely vertically into end members, cylinder members and an intermediate ring member, one end member containing a low pressure chamber, the other member containing a high pressure inlet chamber, the ring mempressure inlet chamber intermediate the high pressure inlet chamber and the outlet chamber.

4. A mixed pressure eluding a casing divided transversely vertically into end members, cylinder members and a divided ring member, one end member containing a low pressure inlet chamber, the other end member containing a high pressure inlet'chamber, the divided ring member containing the outlet chamber and one of the cylinder members containing a low pressure inlet chamber interposed between the high pressure inlet chamber and the outlet chamber.

tally into upper transversely vertically into end inlet mem inlet turbine engine ini 5. A mixed pressure turbine engine ineluding a casing having high and low pres sure element members and divided horizonand lower half sections and bers and an intermediate outlet member.

6. A mixed pressure turbine engine including a casing divided horizontallyinto upper and lower half sections and transversely vertically intoend members, cylinder members and an intermediate ring mem ber, one end member containing a low pressure inlet chamber, the other inlet member containing a high pressure inlet chamber, the ring member containing the outlet chamber and one of the cylinder members containing a low pressure inlet chamber between the the outlet chamber.

7. A mixed pressure turbine engine including a casing divided horizontally into upper and lower half sections and transversely vertically into end members, cylinder members and a divided intermediate ring member, one end member containing a low pressure inlet chamber, the other end inlet member containing a high pressure inlet chamber, the ring member containing the outlet chamber and one of the cylinder members containing a low pressure inlet chamber between the high pressure inlet chamber and the outlet'chamber.

In testimony, that I claim the foregoing as my invention, 1 have signed my name in resence of two witnesses, this 23d day of ec. 1911. OTTO BANNER.

Witnesses;

EDWARD N. Dm'rmon, 'CnARLEs FRU'roHnY.

high pressure inlet chamber and 

